If you have a good competitive moveset for Ambipom, post an answer below and upvote the best ones. Movesets for any of its pre-evolutions can also be shared on this thread.

Be sure to include full set details in your post, e.g. items, abilities, natures and EVs. Some explanation, including the intended game mode for your set, is also appreciated. Access the full list of guidelines here.

Its a good set but if you use Last Resort, your opponent will know that Ambipom only knows normal moves and will send out a resistant type. Someone used this against me so I blocked with a Ferrothorn w/ Iron Barbs.

Fake-out flinches with some pretty high power when you add up Normal gem(for the first time), STAB, and Technician. U-turn is for switching so you can repeat the process again. Payback is for Ghost types. Double-hit would be for Sub-breaking and STAB while Low-sweep is coverage.

With Choice-specs his S.Attack becomes pretty good. Swift has 90 Base-power with Technician so it is great STAB. Thunderbolt is coverage. Hidden-power(Fire/Fighting/Ice) it depends on the needs of your team, if you get the IVs just right you can get a Technician boost for Hidden-power to get it 90 base-power, coverage. Shadow-ball is coverage.

Also a note: You could swap Specs for Focus-sash and Shadow-ball for Nasty-plot.

Ambipom (M) @ Toxic Orb
Trait: Technician
EVs: 176 Atk, 128 Def, 128 Sp. Def, 76 Spd OR 252 Atk, 252 Spd, 4 HP
Nature: Adamant (+ Atk, -Sp. Atk)
- Fake Out
- Facade
- Low Sweep
- Fling/Switcheroo
> Fake Out is a must-have on this guy, the +3 priority allows it to surpass moves such as Mach Punch as it causes the opponent to flinch, wasting one turn and getting the Toxic Orb working. Since it's base power is 40, Technician increases this to 80, and along with STAB makes it a good first move. Since the Toxic Orb has Poisoned Ambipom, Facade's power becomes extremely high with STAB benefit. Low Sweep is also a very good option to use to clean up Steel or Rock Pokemon who would otherwise wall Ambipom. It is Technician-run giving it a base of 120 power. Fling once again is powered by Technician and Poisons the opponent, making it a better option than Toxic. Since it is Dark, Ghost types hopefully will cop a bit of damage, as they are one of the only things that will stop him. Switcheroo is also an option, giving the opponent a useless Poisoned stat, whist Ambipom benefits from the opponent's item.

As you can see the core of success for this set is Technician. Pretty much the only thing that will stop this guy is a Ghost type, as Fling won't be sweeping it.

The idea is, you keep it at the back of your party, and when you're faced with a Pokemon that's sweeping your team, you bring this guy in, and it'll defeat it. First, you use fake out, which is powered up by STAB and technician, and the opponent flinches. Then, you use fling, and with the king's rock, its power is just low enough to be powered up by technician. And also because its the king's rock, they flinch again. So you've dealt a decent amount of damage to the opposing Pokemon without them doing anything. Next, you use acrobatics, which makes use of its item loss, to bring its power to 110. It also covers its weakness. Now, you can use last resort. By now, you should have defeated the opposing Pokemon without them moving more than once or twice, and you will be able to keep on sweeping!

You can tell what the set is about just by looking at it. It's not particularly powerful, but oh man is it fun!
Fake Out into Fling-King's Rock is two turns of guaranteed flinching(assuming you are faster than your opponent of course). Both of these get a Technician boost, as well.
You may then steal their item with Thief (which gets the maximum Technician boost)! This in and of itself screws many sets over (like many item-shenanigan movesets). Then you have the option to Fling their item back at them, or just keep it if you like it =D
Acrobatics is there as a move with extremely good synergy with this set. It covers Fighting-types (if you want to stay and take a hit that is, or if you are confident you can OHKO it), and most of all: when you have an item, it's 55 base power gets boosted by Technician, and when you don't, you get a whopping 110 base power! So you pretty much always use it safely without worrying about the weaker version.

So there you have it! Not the best competitive moveset, but definitely viable in UU, where many Pokémon depend on their item to bring out their full potential!
(Oh yea, and no-item Acrobatics outspeeds and OHKOs offensive Gallade and offensive Mienshao, two big Fighting-type threats.)

How to use: Obviously use fake out first, Shadow Claw if they start out with a Ghost type, then Last Resort and hope they get KO'd. If they switch out you can predict or be safe and use Last Resort, when the Ghost type Pokemon comes out, Shadow Claw it. If they bring out a Rock that resists normal, use Seed Bomb. The Life Orb and Technician will really boost your power!

My Ambipom acts as good overall coverage and a baton passer when he can't do anything.

Ability - Technician
Item - Normal Gem

Fake Out
Double Hit
Nasty Plot
Baton Pass

If your opponent isn't resistant or immune to normal type, Fake out followed by Double Hit with stab, technician, and the normal gem on the fake out is devastating. Because he has great speed he will generally pull off the double hit first too and if you're Ambipom is offensive you should get off a great deal of damage. When Ambipom is stopped by a steel, rock, or ghost type, his speed comes into play again. If he can take a hit and pass of nasty plot to a prime sp. attacker you're golden.

I've been running this set a lot lately and have found it very effective when used properly. I've only seen one out of 100+ Wifi Battles in XY so far so it is unexpected.

Unfortunately Low Seep got buffed from 60 BP to 65 BP so Ambipom no longer takes advantage of his Technician ability which is replaced with Power-Up Punch at 40 BP but the attack raise is nice. Usually Fake Out will nearly knock them out giving you a free Power-Up Punch.

Normal Gem is the only Gem currently available in XY and works well with Fake Out, unless it resists the hit this will do a lot of damage. Now Ambipom has no item and no way to hit Ghost types which is why Thief is there. And it's also handy as Thief got buffed from 40 BP to 60 BP in Gen VI.

Double Hit is his main STAB move and pretty standard adding up to an immense 105 BP. All moves take advantage of his Technician ability.

One thing to keep in mind is he's definitely not a sweeper by any means, he's very frail. But if you know when and how to use him it is a big threat. High risk high reward.

Moveset:Fake Out: STAB, works great with Technician and Normal Gem. Aerial Ace: Covers weakness to fighting and also works with Technician.Power-Up-Punch: Coverage, works with Technician and boosts Attack.Payback: Coverage, works with technician if you go first, doubles if you go second.

Fake Out is for 100% flinching and boosted with the Normal Gem and Technician makes it very powerful.
If Fake Out doesn't OHKO, you can finish off your opponent with Double Hit which is STAB and Technician boosted.
If your opponent is too powerful and bulky, you can U-Turn out on the next turn keeping Ambipom safe and ensuring another Fake-Out if a Pokemon faints.
The last three are optional and depend on your team. I chose Low Sweep to take out bulky Pokemon, Shadow Claw to finish Ghosts.
I personally use Acrobatics because after Fake Out w/ Normal Gem it will be boosted to 110. If you use a different item, Technician will boost it instead.